Monitoring unit



FIG. 1 is a front perspective view of the monitoring unit design;

FIG. 2 is a front view of the monitoring unit design;

FIG. 3 is a back view of the monitoring unit design;

FIG. 4 is a left side view of the monitoring unit design;

FIG. 5 is a right side view of the monitoring unit design;

FIG. 6 is a top view of the monitoring design;

FIG. 7 is a bottom view of the monitoring unit design; and,

FIG. 8 is a another bottom view of the monitoring unit design.

The broken lines depict unclaimed environmental subject matter. 

CLAIM The ornamental design for a monitoring unit, as shown and described. 